Post office locations in 03878
| Post Office | Address | Phone | Hours |
| SOMERSWORTH | 2 GOVERNMENT WAY SOMERSWORTH, NH 03878 - 3249 | 603-692-4267 | Mon-Fri 8:00am - 5:00pm Sat 8:00am - 12:00pm Sun Closed |
| Post Office | Address | Phone | Hours |
| SOMERSWORTH | 2 GOVERNMENT WAY SOMERSWORTH, NH 03878 - 3249 | 603-692-4267 | Mon-Fri 8:00am - 5:00pm Sat 8:00am - 12:00pm Sun Closed |